The current research aims to broaden the understanding of spousal support among couples coping with a life threatening illness- Coronary Heart Disease (CHD) versus general population of couples. Two studies were designed. Study 1(control group) will focus on general population of couples and its goal is examine the contribution of personality traits of the couples to their marital satisfaction and well-being. Study 2 (target group) will focus on couples coping with a first acute coronary heart disease and its goal is to examine the contribution of personality traits of the couples to their marital satisfaction and well-being, and to health promoting behaviors (smoking cessation, medication adherence) and physical recovery (change in body mass index, change in cholesterol levels) of the ill partners.